Delaney, Margaret Lois; Boyle, Edward A (1987): (Table 1) Cd/Ca and Mn/Ca ratios of benthic foraminifera from DSDP Hole 30-289 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.770015, Supplement to: Delaney, ML; Boyle, EA (1987): Cd/Ca in late Miocene benthic foraminifera and changes in the global organic carbon budget. Nature, 330(6144), 156-159, https://doi.org/10.1038/330156a0
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The late Miocene carbon shift (~6.2 Myr) -a 0.5-1.0 per mil, d13C decrease in benthic and planktonic foraminifera- has been ascribed to changes in global inventory, deep-ocean circulation, and/or productivity. Cadmium, d13C, and nutrients in the ocean are linked; comparison of d13C and Cd/Ca yields circulation and chemical inventory information not available from either alone. We determined Cd/Ca ratios in late Miocene benthic foraminifera from DSDP Site 289. Results include: (1) late Miocene Pacific Cd/Ca values fall between those of late Quaternary Atlantic and Pacific benthic foraminifera; (2) there are no systematic Cd/Ca offsets between Cibicidoides kullenbergi, Cibicidoides wuellerstorfi and Uvigerina spp.; and (3) there is a very slight Cd/Ca change coincident with d13C. Cd/Ca, slightly higher in younger, isotopically lighter samples, exhibits a smaller increase than predicted if circulation were the primary cause of the carbon shift. The carbon shift may have been due to a long-term shift in the steady-state carbon isotope input or to a change in the sedimentation of organic carbon relative to calcium carbonate.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -0.498700 * Longitude: 158.511500
Date/Time Start: 1973-05-31T00:00:00 * Date/Time End: 1973-05-31T00:00:00
Minimum DEPTH, sediment/rock: 159.90 m * Maximum DEPTH, sediment/rock: 300.90 m
Event(s):
30-289 * Latitude: -0.498700 * Longitude: 158.511500 * Date/Time: 1973-05-31T00:00:00 * Elevation: -2206.0 m * Penetration: 1271 m * Recovery: 709.1 m * Location: South Pacific/PLATEAU * Campaign: Leg30 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 133 cores; 1270.8 m cored; 0 m drilled; 55.8 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Delaney, Margaret Lois | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Epoch | Epoch | Delaney, Margaret Lois | |||
| 4 | AGE | Age | ka BP | Geocode | ||
| 5 | Species | Species | Delaney, Margaret Lois | |||
| 6 | Cadmium/Calcium ratio | Cd/Ca | mmol/mol | Delaney, Margaret Lois | ||
| 7 | Manganese/Calcium ratio | Mn/Ca | mmol/mol | Delaney, Margaret Lois | ||
| 8 | Comment | Comment | Delaney, Margaret Lois |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
288 data points